Stop Lamps

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The STOP LPS 20 A fuse in the engine wiring harness junction block supplies battery positive voltage to the normally open stop lamp switch. When the driver presses the brake pedal, the switch contacts close and battery positive voltage is supplied to both the VEH STOP 10 A fuse and the CHMSL 10 A fuse. Battery positive voltage is also supplied by the STOP LPS 20 A fuse in the engine wiring harness junction block to the turn signal switch. The current flow is now to the stop lamps which are grounded at G401. The center high mounted stop lamp (CHMSL) is grounded at G410 or G203 for pick ups.

For trailer wiring, a separate stop lamp circuit is connected through the engine wiring harness junction block from the CHMSL 20 A fuse to the trailer wiring harness.